The Haulotte HT67 RTJ O is a rugged rough-terrain telehandler designed for lifting and placing loads in challenging environments. Its instrument cluster provides critical alerts for engine, hydraulic, and safety systems to ensure operator awareness and machine reliability.
Haulotte HT67 RTJ O Warning Light Symbols
| Symbol | Name | Color | What it means | What to do |
|---|---|---|---|---|
| Master Warning (Stop) | RED | On the HT67 RTJ O, this red stop light signals a critical system failure that demands immediate machine shutdown to prevent damage or injury. | Stop the engine safely and consult the fault code on the display. | |
| Master Caution | AMBER | This amber light on your HT67 RTJ O indicates a non-critical issue that requires attention soon, such as a pending maintenance interval or minor sensor fault. | Check the multifunction display for specific warnings and schedule service. | |
| Check Engine (MIL) | AMBER | When illuminated on the HT67 RTJ O, the check engine light alerts to a detected engine management or emission system anomaly that may reduce performance. | Reduce load, complete the current cycle, then have the engine diagnosed by a certified technician. | |
| Engine Oil Pressure | RED | This red light on the HT67 RTJ O warns that engine oil pressure is dangerously low, risking internal engine damage if operation continues. | Stop the engine immediately, check oil level and look for leaks. | |
| Battery / Charging | RED | On the HT67 RTJ O, a red battery light indicates the alternator is not charging or the battery voltage is critically low. | Stop the engine and inspect the alternator belt and connections; recharge or replace battery as needed. | |
| Coolant Temperature | RED | This red warning on the HT67 RTJ O signals that engine coolant temperature has exceeded safe limits, risking overheating and engine damage. | Reduce engine load immediately and allow idle cooldown; check coolant level and radiator for blockages. | |
| Hydraulic System | AMBER | When amber on the HT67 RTJ O, the hydraulic system indicator warns of low oil level, high temperature, or filter blockage in the hydraulic circuit. | Stop machine safely, check hydraulic oil level and condition, and inspect hoses for leaks. | |
| Overload / Capacity | RED | This red light on the HT67 RTJ O activates when the platform or lift arm exceeds the rated load capacity, triggering stability safeguards. | Immediately reduce load or retract the boom to a safe position until the warning extinguishes. | |
| Parking Brake | AMBER | On the HT67 RTJ O, an amber parking brake light indicates the brake is engaged or a fault in the brake system is detected. | If intended, release brake; if persistent, stop the machine and inspect the brake system. | |
| Seat Belt | AMBER | This amber light on the HT67 RTJ O reminds the operator that the seat belt is not fastened or the sensor is faulty. | Fasten your seat belt; if the light stays on, check the buckle connection. | |
| Glow Plug / Preheat | AMBER | On the HT67 RTJ O, this indicator shows the glow plugs are active during cold start preheating; wait for it to turn off before cranking. | Turn key to on position and wait until the light goes out before starting the engine. | |
| Low Fuel | AMBER | This amber light on the HT67 RTJ O warns that the fuel level is low, potentially causing engine starvation on uneven terrain. | Refuel at the earliest opportunity to avoid running out during operation. | |
| Service / Hour Meter | AMBER | On the HT67 RTJ O, the service indicator reminds that routine maintenance (oil, filters, etc.) is due based on engine hours or calendar interval. | Schedule maintenance as per the operator's manual; reset the reminder after service. | |
| Swing / Slew Lock | GREEN | This green light on the HT67 RTJ O confirms that the turret swing lock is engaged, preventing rotation during transport or parking. | Release the swing lock before operating the boom rotation function. |
14 symbols shown. Icons follow ISO 2575 dashboard standards; exact graphics vary by model year.
Most Important Warning Lights
Engine Overheating
Common causes
- Low coolant level
- Radiator blockage
- Coolant fan failure
What to do
Stop the HT67 RTJ O immediately, allow engine to cool, then check coolant level and clean the radiator fins. Do not operate until temperature is normal.
Hydraulic System Failure
Common causes
- Low hydraulic oil
- Hydraulic oil overheating
- Contaminated oil
What to do
Park the HT67 RTJ O on level ground, check hydraulic oil level and temperature; look for leaks around hoses and cylinders. Replace filters if contamination suspected.
Overload Condition
Common causes
- Platform load exceeds rated capacity
- Uneven load distribution
- Stability sensor malfunction
What to do
Reduce the load immediately; reposition to balance the load. If the warning persists, inspect the load cells and contact Haulotte service.
Engine Low Oil Pressure
Common causes
- Low engine oil level
- Oil pump failure
- Clogged oil filter
What to do
Shut down the HT67 RTJ O engine immediately, check oil level with dipstick, and search for leaks. If level is normal, do not restart — call a technician.
Battery Charging Fault
Common causes
- Loose alternator belt
- Faulty alternator
- Corroded battery terminals
What to do
Stop the machine, inspect the alternator belt tension and battery connections. If the belt is intact, test the alternator output; replace charging system components as needed.
Frequently Asked Questions
Why does my HT67 RTJ O show a master warning and the hydraulic light at the same time?
This combination typically indicates a critical hydraulic system fault, such as low oil pressure or high temperature. Stop the machine immediately and check hydraulic fluid level and temperature; do not restart until the issue is resolved.
The parking brake light stays on even after releasing the brake on the HT67 RTJ O. What should I do?
This suggests a sensor or electrical fault in the parking brake circuit. Try cycling the brake lever; if the light remains, the machine can still be operated with caution, but have the brake system inspected by Haulotte service to prevent unintended brake lock.
How do I reset the service hour meter reminder on the HT67 RTJ O?
After performing the required maintenance, turn the ignition to the 'on' position without starting the engine, then press and hold the display menu button for 10 seconds until the hour meter symbol disappears. Refer to the manual for specific steps.
What does the swing lock green light mean when I'm about to operate the boom?
A steady green swing lock light means the turret rotation is locked. You must disengage the lock using the dashboard switch before attempting to turn the boom. The light will turn off when unlocked.
My HT67 RTJ O's glow plug light flashes rapidly when I turn the key. Is that normal?
Rapid flashing indicates a fault in the glow plug system or cold start aid. The engine may still start but could run rough. Have the glow plugs and control module tested by a technician to ensure reliable cold weather starting.
The overload light came on while I was lifting a load on uneven ground. Is this a sensor error?
The overload system on the HT67 RTJ O is sensitive to stability; uneven ground can trigger the warning even if the load is within limits. Check that the machine is on firm, level ground. If the light persists with the load within capacity, recalibrate the load sensor following the manual.